problems load larrd library - rc-03

I always problem to load larrd libraries :

hobbitd_larrd: error while loading shared libraries: librrd.so.0: cannot
open shared object file: No such file or directory
2005-02-23 09:45:19 Worker process died with exit code 32512, terminating


i resolve adding add these lines in hobbitserver.cfg

# aggiunto
LD_LIBRARY_PATH="/usr/local/rrdtool-1.0.49/lib"
export LD_LIBRARY_PATH
RUNTIMEDEFS="LD_LIBRARY_PATH=/usr/local/rrdtool-1.0.49/lib"

my SO is Red Hat Enterprise Linux ES release 3 (Taroon Update 3)

Marco